6) How we can help the twins will be discussed at the meeting. 7) When they'll start the project has not been decided yet.
8) It's certain that he will succeed .
很遗憾的是我们输了比赛。
_I_t _is__a__p_i_ty__t_h_a_t. we lost the match
这是事实他考试作弊了。 _It_i_s_a__fa_c_t__th_a_t_he cheated in the exam.
3) It +不及物动词+从句
It happened that...
eg. Whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved.
whether “是否”，在主语从句中不充当成分。
2.连接代词who ，what ，which, whatever, whichever, whoever What many scientists believe is that the continued presence of water …
*__It__is__r_e_p__o_r_t_e_d__t_h_a_t(据报道)20 people were killed in
the accident.
*__I_t_i_s__s_u_g__g_e_s_t_e_d__t_h__a_t(建议)we should eat more
vegetable and do more exercise.
• 注意三 • 注意：主语从句中 ，谓语动词一般用单数 • What引导的主语从句，可根据表语决定 • What he needs __i_s__that book. • What he needs __a_r_e__some books.
Summary:
Subject Clause
1. 用 that / whether / if/ /where / how / when /why / who /what/which/ how much / etc. 来连接主语从句.
在从句中作定语
3)连接副词when，where， how， why。
Why they suddenly disappeared still remains a mystery. When they will set off is not decided. Where she is from is unknown. How we will paint the house has not been decided.
2. That the earth is round is known to all. -- It’s known to all that the earth is round. 但what引导的主语从句除外。
it作形式主语的常用句式： ①It be＋形容词(obvious, likely, possible, strange, natural, important, necessary, essential...)＋that从 句 ②It be＋名词短语(a pity, a shame, a fact, a surprise, an honour, no wonder...)＋that从句 ③It be＋过去分词(said, thought, believed, supposed, hoped, reported, expected, ...)＋that从 句 ④It＋特殊动词(seems, appears, happens, matters, occurs to sb, makes no difference...)＋that从句
4.(___W__h_o can join in the sport meet) is decided by the teacher.
5.(_W__h_e_th__er_ it will rain or not) is not clear. 6. (_W__h_y the earth is becoming warm) is a good topic for research.
• I am not certain/sure whether I has met him before. • 4.他告诉我，他已经辞去工作了。
• He told me that he had quitted/quit his job.
Subject Clauses 主语从句
主语从句
陈述句 一般疑问句 特殊疑问句
在从句中作宾语
What it is on earth has not been figured out.
在从句中作表语
Whoever breaks the law will be punished.
Which student will win the first is uncertain.
在从句中作主语
在从句中充当的成 分
when（ever） 时间状语
where
地点状语
含义 什么时候，…的时候 哪里，……的地方
why
原因状语为什么ຫໍສະໝຸດ …的原因how方式状语
怎样，如何，…的方式
1）从属连词：that， whether等.
eg. That people cut down too many trees destroyed the balance of nature. that 无意义，在主语从句中不充当成分， 但不能省略。
动词/be
That+ 陈述句 Whether +一般陈疑述问句句 特殊疑问词 + 特陈殊述疑句问句
动词/be
引导词
从属连词（3个）：that 、 whether
连接代词 （9个）：who、 whom 、 what、 which、 whose、 whoever whomever、 whatever、 whichever、
wonderful…that… +(should) +do…
It is possible that *____________(很可能)she will come back tomorrow. *__I_t _is__o_b_v_io_u__s_t_h_a_t_(很明显)this measure is effective.
在从句中作状语
主语从句：找出下列句子中的主语从句。
1) That he will succeed is certain . 2) Whether he will go there is not known . 3) What he said is not true . 4) Where he hid the money is to be found out . 5) Whoever comes is welcome.
仿写练习
• 1.你要留意老师所说的话。
• You should pay attention to what the teacher said. • 2.我能问你什么时候在哪里出生吗？
• May I ask you when and where you were born? • 3.我不能确定以前是否见过他。
连接副词（4个）：when、 why、where、 how
连词
在从句中充当的成分
含义
that whether what（ever） who(m) whose
which
不充当成分 不充当成分 主/宾/表/定 主/宾/表 定语
定语 主/宾/表/
无具体含义 是否
什么，…的东西/事
谁 谁的
哪一个/件……
连词
7.(_T_h_a_t__ the earth is a solid ball) is known to us all.
Conclusion: 主语从句作主语时，谓语动词一般用单数形式。
注意一:主语从句后置! 为了避免主语冗长,句子头重脚轻,经常用it作形式主语, 主语从句放在后面作真正的主语.
1. That you missed the chance is a pity. -- It is a pity that you missed the chance.
Complete the sentences using what, whether, where,
when， who, why, how or that.
1.(__W_h__atis needed for success) is your hard work.
W2.h(_en__/H__o_wthey will arrive )has been told to the teacher. 3.(W__h_e_r_e/wwheewthielrl go tomorrow )hasn’t been decided yet.
4) It + be +过去分词+从句
It is said that... 据说…… It is known to all that... 众所周知…… It is reported that... 据报道…… It is believed that...据信……;人们相信…… It is suggested that + (should）do... 建议…… It must be admitted that…必须承认…… It cannot be denied that… 不可否认…… It must be pointed out that…需指出的是……